125513642256611 has 8 divisors (see below), whose sum is σ = 143606613506304. Its totient is φ = 107461283738760.

The previous prime is 125513642256559. The next prime is 125513642256641. The reversal of 125513642256611 is 116652246315521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125513642256611 - 2⁴⁶ = 55144898078947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125513642256611.

It is not an unprimeable number, because it can be changed into a prime (125513642256641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10153176335 + ... + 10153188696.

It is an arithmetic number, because the mean of its divisors is an integer number (17950826688288).

Almost surely, 2^{125513642256611} is an apocalyptic number.

125513642256611 is a deficient number, since it is larger than the sum of its proper divisors (18092971249693).

125513642256611 is an equidigital number, since it uses as much as digits as its factorization.

125513642256611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20306365921.

The product of its digits is 2592000, while the sum is 50.

The spelling of 125513642256611 in words is "one hundred twenty-five trillion, five hundred thirteen billion, six hundred forty-two million, two hundred fifty-six thousand, six hundred eleven".